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Run a self-hosted agent behind a web proxy

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TFS 2017 | TFS 2015

Note

In Microsoft Team Foundation Server (TFS) 2018 and previous versions, build and release pipelines are called definitions, runs are called builds, service connections are called service endpoints, stages are called environments, and jobs are called phases.

When your self-hosted agent requires a web proxy, you can inform the agent about the proxy during configuration. This allows your agent to connect to Azure Pipelines or TFS through the proxy. This in turn allows the agent to get sources and download artifacts. Finally, it passes the proxy details through to tasks which also need proxy settings in order to reach the web.

TFS 2017.2 and older

Important

You also can use this method for Azure Pipelines and newer versions of TFS. We strongly recommend the more modern method, which you can access by switching to the TFS 2018 or Azure Pipelines docs.

In the agent root directory, create a .proxy file with your proxy server url.

echo http://name-of-your-proxy-server:8888 | Out-File .proxy

If your proxy doesn't require authentication, then you're ready to configure and run the agent. See Deploy an agent on Windows.

Note

For backwards compatibility, if the proxy is not specified as described above, the agent also checks for a proxy URL from the VSTS_HTTP_PROXY environment variable.

Proxy authentication

If your proxy requires authentication, the simplest way to handle it is to grant permissions to the user under which the agent runs. Otherwise, you can provide credentials through environment variables. When you provide credentials through environment variables, the agent keeps the credentials secret by masking them in job and diagnostic logs. To grant credentials through environment variables, set the following variables:

$env:VSTS_HTTP_PROXY_USERNAME = "proxyuser"
$env:VSTS_HTTP_PROXY_PASSWORD = "proxypassword"

Note

This procedure enables the agent infrastructure to operate behind a web proxy. Your build pipeline and scripts must still handle proxy configuration for each task and tool you run in your build. For example, if you are using a task that makes a REST API call, you must configure the proxy for that task.

Specify proxy bypass URLs

Create a .proxybypass file in the agent's root directory that specifies regular expressions (in ECMAScript syntax) to match URLs that should bypass the proxy. For example:

github\.com
bitbucket\.com